Buggy code:
} isPatch = false ; isDeprecated = false ; attachment = null ; attachmentAttribute = null ; break ; case DATA : break ; case BUGZILLA : break ; case BUG : if ( bugParseErrorOccurred ) { bugParseErrorOccurred = false ; break ; } addDescriptionAndComments ( ) ; TaskAttribute numCommentsAttribute = repositoryTaskData . getRoot ( ) . getMappedAttribute ( LONGDESCLENGTH . getKey ( ) ) ; if ( numCommentsAttribute == null ) { numCommentsAttribute = BugzillaTaskDataHandler . createAttribute ( repositoryTaskData , LONGDESCLENGTH ) ; } numCommentsAttribute . setValue ( ( "" + ( commentNum ) ) ) ; updateAttachmentMetaData ( ) ; TaskAttribute attrCreation = repositoryTaskData . getRoot ( ) . getAttribute ( CREATION_TS . getKey ( ) ) ; updateCustomFields ( repositoryTaskData ) ; if ( ( token ) != null ) { TaskAttribute tokenAttribute = BugzillaTaskDataHandler . createAttribute ( repositoryTaskData , TOKEN ) ; tokenAttribute . setValue ( token ) ; } TaskAttribute estimatedTimeAttr = repositoryTaskData . getRoot ( ) . getMappedAttribute ( ESTIMATED_TIME . getKey ( ) ) ; TaskAttribute deadlineAttr = repositoryTaskData . getRoot ( ) . getMappedAttribute ( DEADLINE . getKey ( ) ) ; if ( ( estimatedTimeAttr != null ) && ( deadlineAttr == null ) ) { BugzillaTaskDataHandler . createAttribute ( repositoryTaskData , DEADLINE ) ; } if ( ( attrCreation != null ) && ( ! ( attrCreation . equals ( "" ) ) ) ) { collector . accept ( repositoryTaskData ) ; } repositoryTaskData = null ; break ; case BLOCKED : case DEPENDSON : TaskAttribute blockOrDepends = repositoryTaskData . getRoot ( ) . getMappedAttribute ( tag . getKey ( ) ) ; if ( blockOrDepends == null ) { BugzillaTaskDataHandler . createAttribute ( repositoryTaskData , tag ) . setValue ( parsedText ) ; } else { if ( blockOrDepends . getValue ( ) . equals ( "" ) ) { blockOrDepends . setValue ( parsedText ) ; } else { blockOrDepends . setValue ( ( ( ( blockOrDepends . getValue ( ) ) + ",<seq2seq4repair_space>" ) + parsedText ) ) ; } } break ; case DUP_ID : TaskAttribute duplicateOf = repositoryTaskData . getRoot ( ) . getMappedAttribute ( tag . getKey ( ) ) ; if ( duplicateOf == null ) { BugzillaTaskDataHandler . createAttribute ( repositoryTaskData , tag ) . setValue ( parsedText ) ; } else { if ( duplicateOf . getValue ( ) . equals ( "" ) ) { duplicateOf . setValue ( parsedText ) ; } } break ; case UNKNOWN : break ; case FLAG : break ; case TOKEN : if ( ( attachment ) != null ) { attachment . setToken ( parsedText ) ; } else { token = parsedText ; } break ; case ATTACHER : if ( ( attachment ) != null ) { IRepositoryPerson author = repositoryTaskData . getAttributeMapper ( ) . getTaskRepository ( ) . createPerson ( parsedText ) ; attachment . setAuthor ( author ) ; } break ; case TARGET_MILESTONE : BugzillaUtil . createAttributeWithKindDefaultIfUsed ( parsedText , tag , repositoryTaskData , BUGZILLA_PARAM_USETARGETMILESTONE , true ) ; break ; case QA_CONTACT : BugzillaUtil . createAttributeWithKindDefaultIfUsed ( parsedText , tag , repositoryTaskData , BUGZILLA_PARAM_USEQACONTACT , true ) ; break ; case STATUS_WHITEBOARD : BugzillaUtil . createAttributeWithKindDefaultIfUsed ( parsedText , tag , repositoryTaskData , BUGZILLA_PARAM_USESTATUSWHITEBOARD , true ) ; break ; case CLASSIFICATION : BugzillaUtil . createAttributeWithKindDefaultIfUsed ( parsedText , tag , repositoryTaskData , BUGZILLA_PARAM_USECLASSIFICATION , false ) ; break ; case ALIAS : if ( ( repositoryTaskData ) == null ) { repositoryTaskData = taskDataMap . get ( parsedText . trim ( ) ) ; if ( ( repositoryTaskData ) == null ) { errorMessage = parsedText + ( Messages . SaxMultiBugReportContentHandler_id_not_found ) ; bugParseErrorOccurred = true ; break ; } else { errorMessage = null ; bugParseErrorOccurred = false ; } } BugzillaUtil . createAttributeWithKindDefaultIfUsed ( parsedText , tag , repositoryTaskData , BUGZILLA_PARAM_USEBUGALIASES , false ) ; TaskAttribute attr = repositoryTaskData . getRoot ( ) . getMappedAttribute ( BUG_ID . getKey ( ) ) ; if ( attr == null ) { attr = BugzillaTaskDataHandler . createAttribute ( repositoryTaskData , BUG_ID ) ; } attr . setValue ( bugIDValue ) ; if ( ( exporter ) != null ) { createAttrribute ( exporter , EXPORTER_NAME ) ; } else { createAttrribute ( "" , EXPORTER_NAME ) ; } break ; case SEE_ALSO : TaskAttribute seeAlso = repositoryTaskData . getRoot ( ) . getMappedAttribute ( SEE_ALSO_READ . getKey ( ) ) ; if ( seeAlso == null ) { <START_BUG> BugzillaUtil . createAttributeWithKindDefaultIfUsed ( null , tag , repositoryTaskData , BUGZILLA_PARAM_USE_SEE_ALSO , false ) ; <END_BUG> BugzillaUtil . createAttributeWithKindDefaultIfUsed ( parsedText , SEE_ALSO_READ , repositoryTaskData , BUGZILLA_PARAM_USE_SEE_ALSO , false ) ; } else { if ( seeAlso . getValue ( ) . equals ( "" ) ) { seeAlso . setValue ( parsedText ) ; } else { seeAlso . addValue ( parsedText ) ; } } break ; case COMMENTID : if ( ( taskComment ) != null ) { taskComment . id = Integer . parseInt ( parsedText ) ; } break ; default : createAttrribute ( parsedText , tag ) ; break ; } } private TaskAttribute createAttrribute ( String parsedText , BugzillaAttribute tag ) { } private void updateCustomFields ( TaskData taskData ) { } private void updateAttachmentMetaData ( ) { } private void addDescriptionAndComments ( ) { } private void addDescription ( SaxMultiBugReportContentHandler . TaskComment comment ) { } private void addComment ( SaxMultiBugReportContentHandler . TaskComment comment ) { } private void parseAttachment ( TaskCommentMapper comment ) { } private static class TaskComment { @ SuppressWarnings ( "unused" ) public int number ; public int id ; public String author ; public String authorName ; public String createdTimeStamp ; public String commentText ; public String timeWorked ; public String isPrivate ; public TaskComment ( String isprivate ) { } } }

Fix:
BugzillaUtil . createAttributeWithKindDefaultIfUsed ( "" , tag , repositoryTaskData , BUGZILLA_PARAM_USE_SEE_ALSO , false ) ;